Programmable indoor transmitter of temperature T0318, T0418

Transcription

1 Programmable indoor transmitter of temperature T0318, T0418 Programmable indoor transmitter of temperature, relative humidity and other derived humidity values T3318, T3418 Programmable indoor transmitter of atmospheric pressure, temperature, relative humidity and other derived humidity values T7318, T7418 with RS232 / RS485 serial output Instruction Manual

2 Device type Instruction Manual Temperature Humidity Pressure Computed values Output Galvanic isolated output T RS232 - T RS485 T RS232 - T RS485 T7318 RS232 - T7418 RS485 Devices are designed for indoor applications. By device type (see previous table) they can measure ambient temperature at C or F, relative humidity of air without aggressive ingredients or atmospheric pressure. Measured temperature and relative humidity are recomputed to humidity expression: dew point temperature, absolute humidity, specific humidity, mixing ratio and specific enthalpy. Devices T7318 and T7418 support atmospheric pressure measurement at hpa, PSI, inhg, mbar, oz/in 2, mmhg, inh 2 O or kpa. They support pressure correction for altitude setting (offset). Unit choice is provided by User s software see later. Devices T0318, T3318 and T7318 communicate via link RS232, devices T0418, T3418 and T7418 via link RS485. Supported communication protocols are Modbus RTU, protocol compatible with standard Advantech-ADAM, ARION and communication with HWg Poseidon devices. Devices are preset from manufacturer to Modbus RTU communication protocol. If you would like to use different communication protocol then Modbus RTU, it is necessary preset them throw user s software see latter. Temperature, relative humidity eventually pressure sensors are non-removable device parts, pressure sensor is placed inside the electronic case. Measured and computed values are optionally shown on dual line LCD display. If there are two values displayed at one LCD line, they are periodically switched between both readings with period of 4 seconds. Display can be switched OFF totally too. Please read instruction manual before the first device connection. Use user s software Tsensor for setting of all device parameters (recommended). It is free to download at It supports make the adjustment of the device too. This procedure is described at file Calibration manual.pdf which is installed commonly with the software. Change of some parameters is possible to do without user s software with Windows hyperterminal (change of communication protocol, its parameters, LCD display setting). It is described in file Description of communication protocols of Txxxx series which is free to download at the same address. Device setting from the manufacturer If special setting was not required in the order device is set from the manufacturer to the following parameters: communication protocol: Modbus RTU device address: 01 communication speed: 9600Bd, without parity, 2 stop bits display: switched ON value displayed at higher line: temperature (temperature / pressure) by device type value displayed at lower line: relative humidity only by device type temperature unit: C pressure unit: hpa correction for altitude: 0 hpa(absolute pressure) preset computed value: dew point temperature 2 IE-SNC-TX3(4)18-06

3 Device installation Devices are designed for indoor applications. It is recommended to mount them on universal wiring box (common installation box KU68) with using two enclosed mounting screws. For correct function there is necessary to find proper device place. It shouldn t be placed at places where it can be affected by sunshine, near radiators, heating elements and other heat sources, air handlers, windows, doors, into racks and shelves and similar places. For buildings with less thermal insulation there is not suitable to place them on external walls of building. If there are communication conductors placed into conduit, there is strongly recommended make it caulk, to restrict air flow around device. Connect cables to terminals with respecting the signal polarity (see figure). Terminals are self-clamping and can be opened by a suitable screwdriver. For the opening, insert the screwdriver to upper terminal hole and lever by him. There are two ways, how to power devices with RS232 interface. They can be powered either from master device or from external power source. For powering from master device RS232 interface there is necessary to interconnect DTR and RTS signals with the device. For powering from external power source, there is necessary to connect positive power terminal to DTR into device terminal only and then do NOT interconnect DTR and RTS with master device. Devices with RS232 interface: Terminal Connect to ( female connector CANNON 9 termination ) GND Shielding, power source ground (PIN 5) Tx Output data for master device, transmit (PIN 2) Rx Input data from master device, receive (PIN 3) RTS DTR Connect with RTS signal to master device (PIN 7), eventually o not connect Connect with DTR signal to master device (PIN 4) or connect positive power terminal from external power source Devices with RS485 interface contain doubled connection terminals to provide continuous connection of next RS485 devices. Terminals description: Terminal A+, B- +U, GND Connect to RS485 communication line Shielding of communication line Power source positive terminal, power source ground For devices with RS485 interface here is recommended to use shielded twisted copper cable (e.g. SYKFY), maximal length 1200m. The cable must be located at indoor rooms. Nominal cable impedance should be 100 Ω, loop resistance max. 240 Ω, cable capacity max. 65 pf/m. Suitable cable is e.g. SYKFY 2x2x0.5 mm 2, where one wire pair serves for the device powering and the other pair for communication link. The cable should be led in one line, i.e. NOT to tree or star. Termination resistor should be located at the end. For short distance other topology is allowed. Terminate the network by a termination resistor. The value of the resistor is recommended about 120 Ω. For short distance termination resistor can be left out. The cable should not be led in parallel along power cabling. Safety distance is up to 0.5 m, otherwise undesirable induction of interference signals can appear. The same for devices with RS232 interface, but a maximal length is restricted to 15 m and allow connect only one device. Electrical system (wiring) may do only worker with required qualification by rules in operation. IE-SNC-TX3(4)

4 Dimensions T0418, T3418, T7418 RS485 T0318, T3318, T7318 RS232 4 IE-SNC-TX3(4)18-06

5 Device mounting Firstly mount back part of device onto wiring box with two holding screws. Connect cables to terminals with respecting the signal polarity (see figure). Terminals are self-clamping and can be opened by a suitable screwdriver. For the opening, insert the screwdriver to upper terminal hole and lever by him. Then insert front part of device firstly at bottom into hinge and then press both parts together see figure1 Figure1: Device mounting Device demounting If there is necessary demount the device, insert flat bladed screwdriver max. 3.5 mm wide from top side into middle device s air hole. There is fastening member placed, insert screwdriver beyond the fastening member about 2 cm deep number at the picture. Then slightly move screwdriver in arrow direction as shown at the picture. It unlock fastening member and the device is partially opened. Remove the screwdriver and take front part of device at top, see number at the picture. Pull front part with pendulum motion, remove front cover, numbers and at the picture. If there is necessary remove back part of device, please disconnect cables and unscrew two holding screws. Figure2: Device demounting IE-SNC-TX3(4)

6 Button and jumper - placing Button is placed behind small hole on the left side of the device (front view). For button pressing use thin instrument, for example paper clip. Button function is described later. Jumper is available only after the front part of device is demounted. Then look at the back side of demounted front part. Jumper is placed at the right bottom corner (at the same side as button). Jumper function is described later. Info mode If in doubt of setting of installed device, verification of its address is enabled even without using computer. Devices with RS232 interface have address always set to one. Power should be connected. Shortly press Button (jumper should be opened). Actual adjusted address of the device is displayed on LCD display at decimal base, for HWg-Poseidon s communication protocol there is shown number corresponding with ASCII address code. Next press of button exits info mode and actual measured values are displayed. Note: No measurement and communication is possible during info mode. If device stays in info mode for longer than 15 s, device automatically returns to measuring cycle. Setting of pressure correction for altitude For devices T7318 and T7418 only! If there is necessary to read value of atmospheric pressure corrected with respect to altitude, it is possible to set corresponding pressure offset for this altitude. It is possible to do it with Users software. This value is then automatically added to measured pressure value. The resultant value of pressure with added correction for altitude must be between 300 hpa and 1350 hpa (from PSI to PSI). Outside this range device sends value of Error 2! Description of communication protocols Detailed description of each communication protocols including examples of communication is available in individual document Description of communication protocols of Txxxx series which is free to download at Note: After switching ON the power of the device it can last up to 2 s before the device starts to communicate and measure! Modbus RTU Control units communicate on master-slave principle in half-duplex operation. Only master can send request and only addressed device responds. During sending of request no other slave station should respond. During communication, data transfer proceeds in binary format. Each Byte is sent as eight bit data word in format: 1 start bit, data word 8 bit (LSB first), 2 stop bits 1, without parity. Device supports communication speed from 110Bd to Bd. Sent request and response have syntax: ADDRESS OF DEVICE FUNCTION Modbus CRC 1 Device sends two stop bits, for receive one stop bit is enough. 6 IE-SNC-TX3(4)18-06

7 Supported functions 03 (0x03): Reading of 16-bit registers (Read Holding Registers) 04 (0x04): Reading of 16-bit input gates (Read Input Registers) 16 (0x10): Setting of more 16-bit registers (Write Multiple Registers) Jumper and button Jumper and button are located next to connection terminals. If communication protocol Modbus is selected the function of jumper and button is as follows: Jumper opened device memory is protected from writing, from device side it is only enabled to read measured value, writing to memory is disabled (no change of device address, communication speed and LCD setting is enabled) Jumper closed writing to device memory is enabled by means of User s software Jumper opened and button shortly pressed device goes to Info mode, see chapter Info mode Jumper closed and button pressed for longer than six seconds causes restoring of manufacturer setting of communication protocol, i.e. sets Modbus RTU communication protocol, device address sets to 01h and communication speed to 9600Bd (after button press there is def message blinking at LCD display. Six seconds later message def stays shown, it means manufacturer setting of communication protocol is done). Modbus registers of the device Variable Unit Address [hex] X Address [dec] X Format Size Status Measured temperature [ C] [ F]* 0x Int*10 BIN16 R Measured relative humidity [%] 0x Int*10 BIN16 R Computed value * [*] 0x Int*10 BIN16 R Address of device [-] 0x Int BIN16 R/W* Code of communication speed [-] 0x Int BIN16 R/W* Serial number of device Hi [-] 0x BCD BIN16 R Serial number of device Lo [-] 0x BCD BIN16 R Version of Firmware Hi [-] 0x BCD BIN16 R Version of Firmware Lo [-] 0x BCD BIN16 R Addition for devices T7310 and T with atmospheric pressure measurement Variable Atmospheric pressure Unit* hpa PSI inhg mbar oz/in 2 mmhg inh 2 O kpa Address Address [hex] X [dec] X Format Size Status Int*10 Int*1000 Int*100 0x Int*10 Int*10 BIN16 R Int*10 Int*10 Int*100 IE-SNC-TX3(4)

8 Since FW version there is possibility to read the all computed values from registers: Variable Unit Address Address [hex] X [dec] X Format Size Status Dew point temperature [ C] [ F]* 0x Int*10 BIN16 R Absolute humidity [g/m 3 ] 0x Int*10 BIN16 R Specific humidity [g/kg] 0x Int*10 BIN16 R Mixing ratio [g/kg] 0x Int*10 BIN16 R Specific enthalpy [kj/kg] 0x Int*10 BIN16 R Explanation: * depends on device setting (by User s software) Int*10 register is in format integer*10 R register is designed only for reading W* register is designed for writing, for details see file Description of communication protocols of Txxxx series X register addresses are indexed from zero register 0x31 is physically sent as value 0x30, 0x32 as 0x31 (zero based addressing). Note: In case there is a need for reading of measured values from the device with higher resolution than one decimal, measured values in device are stored also in Float format, which is not directly compatible with IEEE754. Protocol compatible with Advantech-ADAM standard Control units communicate on master-slave principle in half-duplex operation. Only master can send requests and only addressed device responds. During sending request any of slave devices should respond. During communication data is transferred in ASCII format (in characters). Each Byte is sent as two ASCII characters. Device supports communication speed from 1200Bd to Bd, parameters of communication link are 1 start bit + eight bit data word (LSB first) + 1 stop bit, without parity. Jumper Jumper is located next to connection terminals. If communication protocol compatible with standard Advantech-ADAM is selected, its function is the following: If jumper during switching ON the power is closed, device always communicates with following parameters regardless stored setting in the device: communication speed 9600 Bd, without check sum, device address 00h If jumper during switching ON the power is not closed, device communicates in accordance with stored setting. If jumper is closed during device operation, device temporarily changes its address to 00h, it will communicate in the same communication speed as before closing jumper and will communicate without check sum. After jumper is opened setting of address and check sum is reset in accordance with values stored in the device. Communication speed and check sum are possible to change only if jumper is closed. Jumper closed and button pressed for longer than six seconds causes restoring of manufacturer setting of communication protocol, i.e. sets Modbus RTU communication protocol, device address sets to 01h and communication speed to 9600Bd (after button press there is def message blinking at LCD display. Six seconds later message def stays shown, it means manufacturer setting of communication protocol is done). 8 IE-SNC-TX3(4)18-06

9 For communication with device which measure more than one value, there is necessary to add at the end of command the number of communication channel, where the measured value is mapped. Command for value reading is #AAx(CRC) cr, where AA is device address, x is number of communication channel, CRC is check sum (can be used or not). Measured value Number of communication channel Temperature 0 Relative humidity 1 Computed value 2 Atmospheric pressure 3 Command #AA(CRC) cr for reading all measured values at once is supported for multichannel devices since firmware version Response: > (temperature)(relative humidity)(dew point temperature)(absolute humidity) (specific humidity)(mixing ratio)(specific enthalpy)(atmospheric pressure)cr ARION communication protocol - AMiT company The device supports communication protocol ARiON version For more details see file Description of communication protocols of Txxxx series or Communication with HWg Poseidon units Device supports communication with HWg-Poseidon units. For communication with this unit set the device with setup software TSensor to communication protocol HWg Poseidon and set correct device address. This communication protocol supports read temperature at C, relative humidity, one of computed value (dew point temperature or absolute humidity) and barometric pressure at kpa (depended by device type). For atmospheric pressure correction to altitude setting there is Users software Tsensor. Jumper and button If communication with HWg Poseidon unit is selected, the function of jumper and button is as follows: Jumper opened and button shortly pressed device goes to Info mode, see chapter Info mode. Jumper closed and button pressed for longer than six seconds causes restoring of manufacturer setting of communication protocol, i.e. sets Modbus RTU communication protocol, device address sets to 01h and communication speed to 9600Bd - after button press there is def message blinking at LCD display. Six seconds later message def stays shown, it means manufacturer setting of communication protocol is done. IE-SNC-TX3(4)

10 Error States of the device Device continuously checks its state during operation. In case error is found LCD displays corresponding error code: Error 0 First line displays Err0. Check sum error of stored setting inside device s memory. This error appears if incorrect writing procedure to device s memory occurred or if damage of calibration data appeared. At this state device does not measure and calculate values. It is a serious error, contact distributor of the device to fix. Error 1 Measured or calculated value except in pressure is over upper limit of allowed full scale range. There is a reading Err1 on LCD display. Value read from the device is (for pressure reading there is hpa correct value) This state appears in case of: Measured temperature is higher than approximately 600 C (i.e. high non-measurable resistance of temperature sensor, probably opened circuit). Relative humidity is higher than 100%, i.e. damaged humidity sensor, or humidity calculation of humidity is not possible (due to error during temperature measurement) Computed value calculation of the value is not possible (error during measurement of temperature or relative humidity or value is over range) Error 2 There is a reading Err2 on LCD display. Measured or calculated value is below lower limit of allowed full scale range. Value read from the device is This state appears in case of: Measured temperature is lower than approximately -210 C (i.e. low resistance of temperature sensor, probably short circuit). Relative humidity is lower than 0%, i.e. damaged sensor for measurement of relative humidity, or calculation of humidity is not possible (due to error during temperature measurement) Measured pressure value with added correction for altitude is outside of range from 300 hpa to 1350 hpa (from PSI to PSI) or the pressure sensor is damaged. Please check setting of pressure correction for altitude with User s software. Computed value calculation of computed value is not possible (error during measurement of temperature or relative humidity) Error 3 There is a reading Err3 on LCD display upper line. Error of internal A/D converter appeared (converter does not respond, probably damage of A/D converter). This error does NOT affect pressure measurement. Rest values are NOT measured. It is a serious error, contact distributor of the device. Error 4 There is a reading Err4 on LCD display. It is internal device error during pressure sensor initialization. Under this condition device does NOT measure atmospheric pressure. Value read from device is Pressure sensor is probably damaged. It is a serious error, contact distributor of the device. 10 IE-SNC-TX3(4)18-06

11 Readings on LCD display C, F Reading next to this symbol is measured temperature or error state of value. %RH Reading next to this symbol is measured relative humidity or error state of value. hpa, PSI, inhg, Reading next to this symbol is measured pressure or error state of value. If selected pressure unit is mbar or oz/in 2 or mmhg or inh 2 O or kpa, there is shown only value (number) without corresponding pressure unit! C / F DP Reading next to this symbol is calculated dew point temperature or error state of value. g/m 3 Reading next to this symbol is calculated absolute humidity or error state of value. g/kg Reading next to this symbol is calculated specific humidity or mixing ratio (depends on device setting) or error state of value. If specific enthalpy is selected, there is shown only value (number) without corresponding unit! symbol 3 near by left display margin Is on if jumper is closed. Technical parameters of the device: RS 485 Interface: Receiver-Input Resistance: Devices on bus: 96 kω max. 256 (1/8 Unit Receiver Load) Measuring parameters: Ambient temperature (RTD sensor Pt1000/3850ppm): Measuring range: -10 to +50 C Resolution of display: 0.1 C Accuracy: ± 0.5 C Relative humidity - T3318, T3418, T7318 and T7418 devices only (reading is temperature compensated at entire temperature range): Measuring range: 5 to 95 %RH (see Device installation) Resolution of display: 0.1 %RH Accuracy: ± 2.5 %RH from 5 to 60 %RH, ± 3 %RH from 60 to 95 %RH, at 23 C IE-SNC-TX3(4)

12 Atmospheric pressure (T7318, T7418 only): Unit hpa, mbar PSI mmhg inhg inh 2 O oz/in 2 kpa Range Display resolution Measurement accuracy T=23 C ±1.3 ±0.02 ±1.0 ±0.04 ±0.5 ±0.3 ± T 40 C ±1.5 ±0.02 ±1.1 ±0.04 ±0.6 ±0.3 ±0.15 Else ±2.0 ±0.03 ±1.5 ±0.06 ±0.8 ±0.5 ±0.20 The value computed from ambient temperature and relative humidity (T3318, T3418, T7318 and T7418 devices only): Display resolution: 0.1 C You can choice one of the next value: Dew point temperature Range: -60 to +80 C (-76 to 176 F) Accuracy: ±1.5 C (±2,7 F) at ambient temperature T < 25 C (77 F) and relative humidity RH >30%, for more details see graphs below 12 IE-SNC-TX3(4)18-06

13 Absolute humidity Range: 0 to 400 g/m 3 Accuracy: ±1,5g/m 3 at air temperature T < 25 C (104 F), for more details see graphs below Specific humidity 2 Accuracy: Range: Mixing ratio 2 Accuracy: Range: ±2g/kg at air temperature T < 35 C (95 F) 0 to 550 g/kg ±2g/kg at air temperature T < 35 C (95 F) 0 to 995 g/kg Specific enthalpy 2 Accuracy: ± 3kJ/kg at air temperature T < 25 C (77 F) Range: 0 to 995 kj/kg 3 The values computed from ambient temperature and relative humidity including their accuracy you can exactly determine by the program Conversions. It is free to download at Response time: temperature: air flow approximately 0.3 m/s t90 < 12 min No air flow t90 < 25 min relative humidity: t90 < 30 s (air flow approximately 1 m/s, relative humidity step 65 %RH, constant temperature) atmospheric pressure 4 : t90 <44 s Recommended calibration interval: T0318, T0418: 2 years Rest types: 1 year 2 This value depends on the barometric pressure. If device doesn t support pressure measurement, then constant value stored inside device memory is used. Default value preset by manufacturer is 1013hPa and can be changed by user s software. 3 This maximum is reached under conditions about 70 C/100%RH or 80 C/70%RH 4 There is possible to change response time. For more details see file Description of calibration and adjustment procedure.pdf, which is installed together with Users software.. IE-SNC-TX3(4)

14 Measuring interval and LCD display refresh: 0.5 s, atmospheric pressure 2 s Power: 9 to 30 V dc Consumption: T0318, T3318, T7318 (RS232) 6mA T0418, T3418, T7418 (RS485) max 0.5 W Protection: IP20 Operating conditions: Operating temperature range: -10 to +50 C Operating humidity range: 0 to 100 %RH (without condensation) Outer characteristics in accordance with Czech National Standart , normal environment with the specifications: AE1, AN1, BE1 Electromagnetic compatibility: complies EN Storing conditions: temperature -30 to +80 C, humidity 0 to 100 %RH without condensation Not allowed manipulations: It is not allowed to operate the device under other than specified conditions in technical parameters. Devices are not designed for locations with chemically aggressive environment. Temperature and humidity sensors must not be exposed to direct contact to water or other liquids. Do not use the device in an explosive environment. Dimensions: 106 x 88 x 33 (h x l x d) Weight: approximately 150 g Material of the case: ABS End of operation Device itself (after its life) is necessary to liquidate ecologically! Technical support and service Technical support and service is provided by distributor. For contact see warranty certificate. 14 IE-SNC-TX3(4)18-06

15 Appendix A Connection of transmitters with RS485 output to the PC The ELO E214 converter is an optional accessory for connection of transmitter with RS485 interface to the PC via USB port. Link RS485 is connected across pin 9 A(+) and pin 8 B(-). The pull up, pull down and termination resistors are part of the transmitter. These internal resistors can be connected to the bus by connecting the corresponding pins of CANON connector (for more information see the operation manual for ELO E214). The ELO E06D converter is an optional accessory for connection of transmitter with RS485 interface to the PC via serial port RS232. Connector marked RS232 connect directly to the PC. Power voltage +6V DC from an external acdc adapter connect to pin 9 of connector marked RS485, 0V connect to pin 5 and link RS485 connect across pin 3 A(+) and pin 4 B(-). Time out setting is performed by connecting the corresponding pins of connector marked RS485 (for more information see the operation manual for ELO E06D). IE-SNC-TX3(4)